We had one panel go out, possibly due to a poor installation job. All of the panels were tilted in slightly, which allowed a buildup of dirt and dust as water evaporated. The one panel that went was causing the inverter fuses to blow. After rewiring, fixing the physical installation, and replacing the Sharp panel all is peachy again! We're getting around 13 kWh per day of solar energy. Thanks to Giddens Electric of Burbank for the fine work getting things running again.